martamsballet
31.08.2019 •
Mathematics
If a line falls on the points (11, 13) and (4, 12), what is its slope? enter your answer as a fraction in lowest terms. use a slash mark ( / ) as the fraction bar.
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Ответ:
I just graphed them then did the slope which was rise over run
Ответ:
(- 19, 55 )
Step-by-step explanation:
Given the 2 equations
y = - 3x - 2 → (1)
5x + 2y = 15 → (2)
Substitute y = - 3x - 2 into (2)
5x + 2(- 3x - 2) = 15 ← distribute and simplify left side
5x - 6x - 4 = 15
- x - 4 = 15 ( add 4 to both sides )
- x = 19 ( multiply both sides by - 1 )
x = - 19
Substitute x = - 19 into (1) for corresponding value of y
y = - 3(- 19) - 2 = 57 - 2 = 55
Solution is (- 19, 55 )